Title:
SEPARATOR FOR ELECTROCHEMICAL DEVICE AND METHOD FOR MANUFACTURING THE SAME
Document Type and Number:
Japanese Patent JP2022140606
Kind Code:
A
Abstract:
To provide a separator for an electrochemical device and a method for manufacturing the same, and a lithium secondary battery including the separator.SOLUTION: There is provided a separator for an electrochemical device which includes: a porous substrate having a plurality of pores; and a porous coating layer positioned on at least one surface of the porous substrate, the porous coating layer including a plurality of inorganic particles and a binder polymer positioned on a whole or a part of the surface of the inorganic particles to connect the inorganic particles with one another and fix the inorganic particles. The binder polymer includes a first binder polymer and a second binder polymer. The first binder polymer is poly(vinylidene fluoride-hexafluoroproyplene), and the second binder polymer is poly(vinylidene fluoride-tetrafluoroethylene). The first binder polymer has an electrolyte uptake of 80 to 165%, and the second binder polymer has an electrolyte uptake of 20 to 40%. There is also provided an electrochemical device including the separator.SELECTED DRAWING: Figure 1
Inventors:
A-young y
Ju-soon Lee
Won-Sik Bae
Bio-Ryu
Ju-soon Lee
Won-Sik Bae
Bio-Ryu
Application Number:
JP2022122587A
Publication Date:
September 26, 2022
Filing Date:
August 01, 2022
Export Citation:
Assignee:
LG HAUSYS,LTD.
International Classes:
H01M50/451; H01G11/52; H01M50/403; H01M50/414; H01M50/426; H01M50/434; H01M50/443
Domestic Patent References:
| JP2017183212A | 2017-10-05 |
Foreign References:
| WO2018021398A1 | 2018-02-01 | |||
| WO2013058371A1 | 2013-04-25 |
Attorney, Agent or Firm:
Shinya Mihiro
Takashi Watanabe
Takashi Watanabe